Window-screen.



E. RfLEARY & R. W. PILLSBURY.

WINDOW SCREEN.

APPLICATION FILED APR. 7. 1915.

1,219,962. I Patented Mar. 20, 1917.

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UNITED STATES FATEET @FFliiiid.

EARL It. LEARY AND RALPH W. PILLSBURY, OF SCARBORO, MAINE.

WINDOW-S GREEN.

Specification of Letters Patent. Patented H5211. 2Q, 1917.

Application filed April 7, 1915. Serial No. 19,644.

To all whom it may concern: 7

Be it known that we, EARL R. LEARY and RALPH W. PILLSBURY, both of Scarboro, in the county of Cumberland and State of Maine, have invented certain new and useful Improvements in 'Window-Screens, of which the following is a specification.

Our invention relates to fly screens ofthat class in which the screen frame is connected with the Window by means of guide strips secured to the casing on the outside of the window.

These screens are commonly fitted between opposite portions of the window casing, the screen frame being held in place by guide strips secured to the inner edges of the outer window casing.

According to our invention we fit the screen frame to the outer surface of the outer casing holding the upper end in place by an extensible filling strip which fills the space between the screen frame and the lower sash rail of the upper sash and acts at the same time as a clamp to hold the frame in place. The lower portion of the frame is held by clamps 0n the inner surface of the screen frame. Y

Our invention may be best understood by reference to the accompanying drawing in which is shown a Window screen in the form in which we prefer to use it.

In the drawing Figure l is a general vertical section on the line 11 of Fig. 3,

Fig. 2 is a section on the line 2-2 of Fig. 1,

Fig. 3 is a section on the line 33 of Fig. 1,

Fig. 4. is a section enlarged on the line 4 4. of Fig. 3,

Fig. 5 is a perspective view of the screen frame and Fig. 6 is a perspective view of a modification showing means for providing for any inequality in the thickness of the outer casing.

Our screen is made practicable from the fact that the thickness of the outer casing is substantially the same in all buildings, that is it is ordinary board thickness or s in.

This fact enables us to make a filling piece to fill the space between the upper rail of the screen frame and the lower rail of the upper sash which is always of the same thickness.

Referring now to the drawing, 1 represents the casing generally and 2 is the outer casing or that which retainsthe upper sash in place. 4 is the upper sash and 5 is the lower sash. The screen frame6 is made in the usual manner with side rails and upper rails 6 and lower rails 6 The frame is made to fit against the outer casing overlapping the casing on the sides, resting on the sill at the bottom,- the upper rail 6 being outside of and on the same level with the lower rail of the upper sash.

The frame is held in place and allowed to slide vertically by means of the usual guide strips 7 secured to the inner edge of the outer casing.

Means are provided for filling the space be tween the upper rail of the screen frame and the lower rail of the upper sash and at the same time clamping the frame to the guide strips.

For this purpose we provide a filling strip secured to the inner face of the upper rail of the screen frame, the ends of the filling strip engaging the guide strips.

As here shown the filling strip is made in two parts, the fixed section 8 preferably rectangular in cross section and the extensible or telescoping section 9.

Each of these sections is the same thickness as the outer casing so that together they fill the space between the screen frame and the lower rail of the upper sash. The section 9 is connected with the section 8 by means of a horizontally disposed tongue 10 which fits into an opposing recess formed in the end of the section 8.

Within this recess is a spiral spring 11 which acts against the inner end of the tongue and tends to force the end of the section 9 outwardly against the guide strip.

The ends of each of the sections 8 and 9 are recessed at the end to lit the inside of the guide strip. 7

The section 9 is held in place and allowed a limited longitudinal motion by means of a screw or pin 9 which extends through a longitudinal slot 9" thus holding the section 9 in sliding relation with the section 8 and with the screen frame.

The two sections of the filling strip are of the same thickness as the outer casing and consequently the filling strip comes into contact with the lower rail of the upper sash and completely fills the opening making an insect tight joint.

On the lower end of the frame we have shown an extensible strip made up of sections 12 and 13 corresponding in construction with the sections 8 and 9 of the filling strip and having the same functions so far as guiding and holding the frame is concerned. As they do not have the function of filling an open space it is not necessary to extend them entirely across the frame. A handle 1% on one side of the frame enables it to be inserted from the inside of the window.

The frame is inserted by placing the ends of the sections 9 and 13 in engagement with the guide strips and then pressing the frame laterally until the two sections contract in length sufficient to allow the opposite ends of the strips to be pushed into place. The expansion of the spiral springs then holds the frame in position and allows it to be raised and lowered.

Une advantage of my device is that my guide strips may be made of suificient size to be easily applied since they do not have to enter a groove in the edge of the screen frame. The strips may be easily applied as they are flush with the outside of the outer casing.

In Fig. 6 we have shown a modification or attachment which may be used to provide for any possible variation in the thickness of the outer casing of the window.

For this purpose we provide an auxiliary filling strip made up of two sections 15 and 16 connected together by an expansible joint. The strip is of relatively thin material and is secured to the main filling strip by screws 18 passing through transverse slots 17 whereby they may be adjusted laterally to fit against the lower rail of the upper sash.

Thus if the main filling strip is not wide enough to fill the'space between the frame and the sash the auxiliary strip is set over to close the space.

This auxiliary filling strip will not be necessary in the ordinary practice of manufacturing for the market and it is designed to be used in unusual cases.

Our screen may be made to order but it is particularly designed to be sold through the regular hardware trade in stock sizes governed by the sizes of the window glass.

It is to be understood that the screen may be made of wood or metal or any other suitable material and that the invention may be embodied in other forms than the one here in shown.

We claim;

1. A window screen including a guide strip secured to the inner edge of the outer casing, a screen frame fitting against the outer face of said casing and an extensible filling strip on said frame for closing the opening between said frame and the lower rail of the upper sash.

A window screen including a guide strip secured to the inner edge of the outer casing and fiush with the outer face of said casing, a screen frame fitting against the outer face of said casing and an extensible filling strip on said frame for closing the opening between said frame and the lower 'ail of the upper sash.

3. A window screen including a guide strip secured to the inner edge of the outer casing, screen frame fitting against the outer face of said casing and an extensible filling strip on said frame for closing the opening etween said frame and the lower rail of the upper sash, the ends of said strip being formed to engage the said guide strips.

i. A window screen including a guide strip secured to the inner edge of the outer casing, a screen frame fitting against the outer face of said casing and an extensible filling strip for closing the opening between the frame and the lower rail of the upper sash, one end of said filling strip being formed by a spring pressed locking section adapted to engage the guide strip to hold the frame in place.

5. A. window screen including a guide strip on the inner edge of the outer casing, a screen frame fitting against the outer face of said casing, a filling strip on said frame for filling the space between the frame and the lower rail of the upper sash, said filling strip having an extensible end adapted to engage the guide strip and a spiral spring interposed between said extensible end and the body of the filling strip.

6. A window screen including a guide strip on the inner edge of the outer casing, a screen frame fitting against the outer face of said casing, a filling strip on said frame for filling the space between said frame and the lower rail of the upper sash, said filling strip having both of its ends adapted to en gage said guide strips and having one end extensible and a spring pressed locking strip on the lower end of the frame for engaging the guide strip.

7 A window screen including a pair of guide strips on the inner edges of the outer casing a screen frame fitting against the outer face of said casing, an extensible filling strip on said frame for filling the space between the frame and the lower rail of the upper sash, said filling strip being composed of a fixed section rectangular in cross In testimony whereof We have aflixed our section and a movable section connected signatures.

with the fixed section by a horizontally dis- EARL R. LEARY.

posed tongue and an opposing recess and a RALPH W. PILLSBURY. spiral spring in said recess, the ends of said WVitnesses: strip being adapted to engage said guide RALPH O. BREWSTER,

strips to hold the frame in place. DORA E. J. KENNEDY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. GI 

